docs: def render_code(code, filetype, pygments_style):
      """Renders a piece of code into HTML. Highlights syntax if filetype is specfied"""
      if filetype:
          lexer = pygments.lexers.get_lexer_by_name(filetype)
          formatter = pygments.formatters.HtmlFormatter(style=pygments_style)
          return pygments.highlight(code, lexer, formatter)
      else:
          return "<pre><code>{}</code></pre>".format(code)